/*	
 *  Copyright (c) 2009-@year@. The GUITAR group at the University of Maryland. Names of owners of this group may
 *  be obtained by sending an e-mail to atif@cs.umd.edu
 * 
 *  Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
 *  documentation files (the "Software"), to deal in the Software without restriction, including without 
 *  limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 *	the Software, and to permit persons to whom the Software is furnished to do so, subject to the following 
 *	conditions:
 * 
 *	The above copyright notice and this permission notice shall be included in all copies or substantial 
 *	portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
 *	LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO 
 *	EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 
 *	IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR 
 *	THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
 */
package edu.umd.cs.emut.model;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import edu.umd.cs.emut.event.EEvent;

/**
 * Abstract component
 * <p>
 * 
 * @author <a href="mailto:baonn@cs.umd.edu"> Bao N. Nguyen </a>
 * 
 */
public abstract class EComponent {

	/**
	 * Component properties
	 */
	Map<String, List<String>> properties = new HashMap<String, List<String>>();

	/**
	 * Event list associated with the component
	 */
	List<EEvent> eventList;

	/**
	 * 
	 */
	public EComponent() {
		super();
	}

	public boolean hasEvent() {
		if (eventList == null)
			return false;
		return (eventList.size() > 0);

	}

	/**
	 * @return the eventList
	 */
	public List<EEvent> getEventList() {
		return eventList;
	}

	protected void initEventList() {
		eventList = new ArrayList<EEvent>();
		for (Class<? extends EEvent> eventType : EEvent.getEventList()) {
			try {
				EEvent event = eventType.newInstance();
				if (event.isSupportedBy(this)) {
					this.eventList.add(event);
				}
			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			}
		}

	}

	/**
	 * get property by name
	 * <p>
	 * 
	 * @param name
	 *            property name
	 * @return value list
	 */
	public List<String> getValuesByName(String name) {
		if (name == null)
			return null;
		return properties.get(name);
	}

	/**
	 * get property by name
	 * <p>
	 * 
	 * @param name
	 *            property name
	 * @return value list
	 */
	public String getFirstValueByName(String name) {
		if (name == null)
			return null;

		if (properties.get(name) == null)
			return null;

		if (properties.get(name).size() < 1)
			return null;

		return properties.get(name).get(0);
	}

	/**
	 * @return the properties
	 */
	public Map<String, List<String>> getProperties() {
		return properties;
	}

	/**
	 * get the set of properties available
	 * <p>
	 * 
	 * @return
	 */
	public Set<String> getPropertyNames() {
		return properties.keySet();
	}

}
